In plain words
What is the house here? Who are the three brothers? The body is a house. Or a temple. In this body that is a house live three brothers. Thoughts, words, action. Thoughts, speech and the power of action. Only when these three live together in harmony, in unity and in joy can we win success in any task whatsoever. But when thoughts go one way, words another and work a third, when the unity of one with the other breaks up, we cannot achieve any task. The oneness of these three is what they called trikaraṇa-śuddhi. In our house we must kindle the zeal and the encouragement that the unity of these three needs.
Fearless, cruel and hard, Ratnākara kept on doing many cruel deeds for the sake of his belly and for the sake of keeping his family. All his thoughts took shape as cruel thoughts. It took on the form of pitilessness. Empty of compassion, hardness grew. So Ratnākara became a highway robber. Without telling this man from that, killing everyone and robbing them of their wealth. He entered on this kind of path. This Ratnākara, who for so long had fostered bad qualities, evil designs and bad thoughts, once had the darśan of the seven ṛṣis, and through that his sin was destroyed. He stopped them and tried to kill them. This Ratnākara. My son, killing is not good. Worms, insects and the like keep doing harm to man. Only the one who does good is man. Try to do good. Do not step forward to do harm. For what are you doing this work?
To fill a span-long belly, suffering troubles, a crore of skills learnt with all zeal, yet never gaining full happiness, why should this human race wither in sorrows? To the devotees who meditate on the Supreme Lord, will He not show the way, O man!
Madman! For the sake of this little belly you torment a crore of people and fill your belly: what is the happiness you enjoy? What happiness is your family enjoying? Such sinful deeds